Python 绑定到 C++ 库,为视频解码、编码以及 GPU 加速的色彩空间和像素格式转换提供全面的硬件加速
Python 绑定到 C++ 库,为视频解码、编码以及 GPU 加速的色彩空间和像素格式转换提供全面的硬件加速
VPF is being replaced by PyNvVideoCodec library with leaner API and pip install support.
The library offers easy-to-use Python APIs, granting access to the core C/C++ video encode/decode capabilities of the Video Codec SDK.
PyNvVideoCodec library is distributed in two formats: binary distribution via PyPI and source code distribution via NVIDIA NGC. In both cases, it can be installed using a single pip install command.
The library is distributed under the MIT license and is officially supported by NVIDIA. PyNvVideoCodec supports all features of VPF (except software encode/decode and surface format conversion).
For more information, please visit the Get Started with PyNvVideoCodec page.
We'd like to thank Roman Arzumanyan, original author of VPF, for his support and efforts along these years. Roman will continue his work on VALI also leveraging NVIDIA GPUs.
VPF stands for Video Processing Framework. It’s set of C++ libraries and Python bindings which provides full HW acceleration for video processing tasks such as decoding, encoding, transcoding and GPU-accelerated color space and pixel format conversions.
VPF also supports exporting GPU memory objects such as decoded video frames to PyTorch tensors without Host to Device copies.
VPF works on Linux(Ubuntu 20.04 and Ubuntu 22.04 only) and Windows
NVIDIA display driver: 525.xx.xx or above
CUDA Toolkit 11.2 or above
530.xx.xx. During installation of CUDA toolkit you could choose to install or skip installation of the bundled driver. Please choose the appropriate option.FFMPEG
apt install libavfilter-dev libavformat-dev libavcodec-dev libswresample-dev libavutil-dev on Ubuntu)Python 3 and above
Install a C++ toolchain either via Visual Studio or Tools for Visual Studio.
We recommend Ubuntu 20.04 as it comes with a recent enough FFmpeg system packages. If you want to build FFmpeg from source, you can follow https://docs.nvidia.com/video-technologies/video-codec-sdk/12.0/ffmpeg-with-nvidia-gpu/index.html
…To check whether VPF is correctly installed run the following Python script
import PyNvCodecIf using Docker via Nvidia Container Runtime,
please make sure to enable the video driver capability: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/user-guide.html#driver-capabilities via
the NVIDIA_DRIVER_CAPABILITIES environment variable in the container or the --gpus command line parameter (e.g.
docker run -it --rm --gpus 'all,"capabilities=compute,utility,video"' nvidia/cuda:12.1.0-base-ubuntu22.04).
Please note that some examples have additional dependencies that need to be installed via pip (pip install .[samples]).
Samples using PyTorch will require an optional extension which can be installed via
pip install src/PytorchNvCodec # install Torch extension if needed (optional), requires "torch" to be installed beforeAfter resolving those you should be able to run make run_samples_without_docker using your local pip installation.
# Indicate path to your FFMPEG installation (with subfolders `bin` with DLLs, `include`, `lib`)
$env:SKBUILD_CONFIGURE_OPTIONS="-DTC_FFMPEG_ROOT=C:/path/to/your/ffmpeg/installation/ffmpeg/"
pip install .To check whether VPF is correctly installed run the following Python script
import PyNvCodecPlease note that some examples have additional dependencies (pip install .[sampels]) that need to be installed via pip.
Samples using PyTorch will require an optional extension which can be installed via
pip install src/PytorchNvCodec # install Torch extension if needed (optional), requires "torch" to be installed beforeFor convenience, we provide a Docker images located at docker that you can use to easily install all dependencies for
the samples (docker and nvidia-docker
are required)
DOCKER_BUILDKIT=1 docker build \
--tag vpf-gpu \
-f docker/Dockerfile \
--build-arg PIP_INSTALL_EXTRAS=torch \
.
docker run -it --rm --gpus=all vpf-gpuPIP_INSTALL_EXTRAS can be any subset listed under project.optional-dependencies in pyproject.toml.
A documentation for Video Processing Framework can be generated from this repository:
pip install . # install Video Processing Framework
pip install src/PytorchNvCodec # install Torch extension if needed (optional), requires "torch" to be installed before
pip install sphinx # install documentation tool sphinx
cd docs
make htmlYou can then open _build/html/index.html with your browser.
If you did not find the information you need or if you have further questions or problems, you are very welcome to join the developer community at NVIDIA. We have dedicated categories covering diverse topics related to video processing and codecs.
The forums are also a place where we would be happy to hear about how you made use of VPF in your project.
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